I'm so tired of vendors like google trying to control all my interactions. I might as well just put a small arduino on my desk and use that instead. (No I didn't dig further but I know there are lots and lots of better ways to do this now. could make a small device with bluetooth/gsm probably fob sized to keep in my pocket and use as a phone these days).
https://docs.arduino.cc/retired/library-examples/gsm-library/GSMExamplesMakeVoiceCall/